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Single Family ResidenceResidential
$365,860$318 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

1423 DIAMOND CT

SUN PRAIRIE, WI 53590
4
Beds
2
Baths
1,149 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.42 ac
Lot SizeThe size of the land the home sits on, from county records.
1968
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$366K
$348K low$384K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,427 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$326,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$76,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$250,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$326,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$370,300

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Split Level
CountyDane
Lot (acres)The size of the land the home sits on, from county records.0.42
HeatingThe type of heating system in the home.Forced Air
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 288 ft²Patio · 176 ft²

Transaction History(1)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Westside Elementary SchoolD-
Elementary · Grades KG–5 · 0.1 mi
H
Sun Prairie West High SchoolD
High · Grades 9–12 · 0.9 mi
M
Prairie View Middle SchoolC
Middle · Grades 6–8 · 0.9 mi

District: Sun Prairie Area School District

Neighborhood · ZIP 53590These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.70
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.21

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.45,977
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.667 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,632
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$119,189
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

1423 Diamond Ct measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 75% of homes in Sun Prairie 53590
  • Costs more per square foot than 92% of homes in Emerald Terrace
  • Smaller than 92% of homes in Emerald Terrace
  • Has a bigger lot than 97% of homes in Emerald Terrace
  • Older than 78% of homes in Sun Prairie 53590

What homes are worth in Sun Prairie 53590

Each bar is how many homes fall in that price range. The marker is this home.

This home
$245K$912K

This home is worth more than 25% of homes in Sun Prairie 53590.

How it measures up in Sun Prairie 53590

The dot is this home. The mark in the middle is the typical home in Sun Prairie 53590.

Estimated value$365,860
CheaperTypical $437,348Pricier

Pricier than 25% of homes nearby

Price per ft²$318
CheaperTypical $260Pricier

Pricier than 81% of homes nearby

Living area1,149 ft²
SmallerTypical 1,507 ft²Bigger

Bigger than 13% of homes nearby

Lot size0.42 ac
SmallerTypical 0.26 acBigger

Bigger than 76% of homes nearby

Year built1968
OlderTypical 1994Newer

Newer than 22% of homes nearby

How 1423 Diamond Ct ranks against every home in each area.
MeasureThis homeEmerald TerraceSun Prairie 53590Dane County
Estimated valuepricier than$365,86064% of homes25% of homes31% of homes
Price per ft²pricier than$31892% of homes81% of homes78% of homes
Living areabigger than1,149 ft²8% of homes13% of homes15% of homes
Lot sizebigger than0.42 ac97% of homes76% of homes76% of homes
Year builtnewer than196842% of homes22% of homes42% of homes

About 1423 Diamond Ct

How much is 1423 Diamond Ct, Sun Prairie, WI worth?

The TopHap Estimate for 1423 Diamond Ct, Sun Prairie, WI is $365,860 as of Oct 21, 2026. The likely range is $348,127 to $383,593. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 1423 Diamond Ct, Sun Prairie, WI?

1423 Diamond Ct, Sun Prairie, WI has 4 bedrooms, 2 bathrooms, 1,149 square feet of living space and a 0.42-acre lot.

When was 1423 Diamond Ct, Sun Prairie, WI built?

1423 Diamond Ct, Sun Prairie, WI was built in 1968, making it 58 years old. It is a split level home. The building has 2 stories.

What schools serve 1423 Diamond Ct, Sun Prairie, WI?

1423 Diamond Ct, Sun Prairie, WI is assigned to Westside Elementary School (elementary), rated D-; Sun Prairie West High School (high), rated D; Prairie View Middle School (middle), rated C. All sit in Sun Prairie Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1423 Diamond Ct, Sun Prairie, WI compare to other homes in Sun Prairie 53590?

Among the 13,550 homes in Sun Prairie 53590, it is worth more than 25% of them ($365,860 against a typical $437,348), its price per square foot is higher than 81% of them ($318 against a typical $260), it is bigger than 13% of them (1,149 ft² against a typical 1,507 ft²), its lot is bigger than 76% of them (0.42 ac against a typical 0.26 ac) and it is newer than 22% of them (1968 against a typical 1994). Measured against all of Dane County, it is worth more than 31% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 1423 Diamond Ct, Sun Prairie, WI?

The 2025 property tax bill for 1423 Diamond Ct, Sun Prairie, WI was $6,427. The county assessed it at $326,500.

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